Demountable rim



G. RISCHMULLER.

nEMouNTABuiy RlM.

APPLICATION FILED OCT. 1I, I9I9.

1,405,803. Patented Feb.71922.

2 SHEETS-SHEET I.

wuentoz G. RISCHMULLER.

DEMOUNTABLE RIM.

APPLICATION HLED ocT. 11, |919.

jjfggz 3m uamtofc UNITED) STA.'llfs DEM'UNTALE, Irun.

.i '-Speiicatex 0f Ltters Patent Patented Feb. 7,1922.

*iiypicgnpa megijpctpbe'r' 1,1, 1919. 'serial no. 329,949.

fTo all whom t may concern ,1

` i Be itknown thatIrGEonGE RisoiiMunnnn, a citizenLof the United States o f America,-

residing at San Francisco', ,infthe county' of San kFrancisco andState of California, Yhave invented certain new and usefulv Improvements in' following ,is a specification.k

VThis invention relates to new and useful improvements in `lc'iemountable` ArimsA adapted for use in connection more especially lwith automobile .wheels orH other self-propelled vehicles. `V i4 An object of this'inventionfis to' provide locking means for maintaining l*the usual Y Y i ferred formof wheel employing my locking Yform .of metallic rimin plac'eupon the wheel which will prevent circumferential creeping orside movementof the rim.

Another object of lthis invention is tol provide locking Ameans forj'holding afrim 'on awheel which is especialiy adapted for v in the appended claims.-

' yence:characters indicatethe samev paytsnv the several'figureg, Y. 4 l 40 metallic wheels having wire'V spokes 'and which can 'be adapted to any ofthe standard wooden ,wheelswith 'slight alterations with.-

out requiring one `,ofsp ec`ial construction.

A further object Aof the'inventionis to providey simple and cheap means for'posi-V tively locking the rim 'in place which can Vbe easily and quickly attachedto or detachedy from the wheel., y Y

`i/Vith theabove other object'sjin View, this invention residesfin the novelv features of construction, formations, combinations, and

arrangement fof parts to behereinafhter more fully described and' particularly pointed out Inv the Ld-rawings', 'ink which similar refer- .Figure 1 isA a fragmentary side elevation partly in section ofametallic wheel showing my 'improved 1rim. lockingrmeans applied thereto; l l

Figure 2 is a plan view lof the locking means, showing partsv of the wheelf-toA which l Y receiving an 'operatingjbolt 21'having oppoit is applied :Figure 8 is a vtra-n'sverse-sectional view onA emountable' Rims, 'of `'which the t locking impreved locking means;

lilgure 5 an elevation, partly section similar to Flgure 1, of a wooden'wheel showwrench'especially adapted for operating my ing myV improved locking Vmeans Vapplied device best shown in Figures 1to4, the 'numeral 10 designates in general thefixed rim of the wheel having wire spokes 11 and upon which is y'mounted a demountable rim 12.

The iXed rimv is fiattened at intervalsaround its circumference, as-indicated at 1 3, and

provided withl slots 14 vfor receiving .the devicesV 15 which vare suitably mounted Aon the flattened portions ofthe `fixed rim v10 and guided in their movements luy-flanges 1 0l von-the edgesof `the felly."

The ylocking device l'comprises locking members 16 slidingly mounted on the-fiat tened 'portions' Vf1zfofathe fixed rim 10 and arejprovided with projections 17'ladapted to engage with a'be'ad 'L18 extendingA vcircu-'I'nferentiallyV around the middleV part ofthe rim '12. The locking members 16 have wedge extensions 19 adapted to vbe forced l12 for locking it iny place against turning apart to V'engage lthe lflattened portions 13 lof'the fixedr'im ofthe wheel andthe rim on the ywheeland the projections'lprevent Y' V"lateral movement Iof the rim.

The two ljofckingmembers 16 are provided 'f with lugs 2O adapted to extend throughlthe slot lektowardthe wheel axle and are similar 'to each other, excepting the lugs 20 areprovided with oppositelythreaded aperturesfor sitely threaded ends, whereby the'locking members may be moved into and out of locking Vpositionby turning the Abolt-21 in the required directions. Thewfixed rimvl() isprovided with pro'ections 22 fastened to the middle of the fiattened portions 13 of the felly after the locking members have been laced in osition, which serve as abutments, imitingl lie movement of locking members in the direction for retracting them from their locking position.

It will be noted that the locking members 16 are beveled at 23 and that the rojections 22 have extensions 24 shaped to fi extensionsserve to hold the locking members within the peripheryof the wheel Whenthey are retracted by the'operating bolt 21. Attached to the fixed rim member onthe undersides of the flattened portions ,13 adjacent the ends of slots 14"'are angle pieces 26 which are. so 4spacedthatthe ends of operating bolt 21 loosely engage with them. These angle,

pieces actas abutments and cause the lock- ,ingmembers 16each to move equally when the bolt 21, is turned. Y A lock nut 25 may be provided, if desired, to prevent Ythe bolt 21 from coming loose.

In Figure .4, I haveillustrated a wrench 27 which is especiallyvsuitable for operating Vso the locking bolt 21. y This wrench comprises ya handle 2 7 with an vintegral jaw 28, and a jaw ymember 29 which is pivoted to the first memberL at 30. A spring 31 attached to the jaw member 20 and engaging the handle. knormally forces the jaw -portion 32 toward the jaw 28 on the handle. On the other side of the pivot 29, the vjaw member 20 is provided With an extension 33 adapted to be engaged by the thumb of the operator for opening land closing the jaws.

Referring to Figures 5 to 8, I have shown how my locking device can be used with wooden wheels. Inthis form the wooden felly 34 is recessed as at 35 and its metallic casing or fixed rim 36 is slotted at 37 for the reception of the locking device 15. The same form of locking members 16 and Voperating bolt 21 are provided and thewheel is adapted toreceive the same form of rim 12 `a set ofvlining vmembers 40, (see Fig. 8)

y,with a circumferential bead 18. The recess 35 in the` felly is so shaped that a flattened portion 38 and slot 39 are provided for the lockingfdevice. In this recess is first placed which are adapted to lie on the flat part-of the recess with the exception of a small depending portion 41 formed by cutting into one end of the member 40, and bending the middle portion down. These lining members 4() areifor the purpose of providing a bearing'surface for the members 16 and bolt 21 which are next placed in the recess. An abutment member 42 similar to the projections 22shown in Figures 1 and 2, is last to be placed within the recess and is retained Y in position by means of a bolt 43 which also holds plates 44 on the opposite sides of the felly which tendto brace the sides of the t the bev-" eled portions of the locking members; these felly next to the recess against lateral strains due to the rim resting on the locking meme bers.

The operation of the invention illustrated in Figs. 1 to 4 is as follows: If it is desired to remove the rim 12 with its tire from the fixed rim 10 and wheel. all that is necessary is'to properly turn-all the operating bolts 21 with any suitable wrench, such as 27 in such a' direction so that the wedge extensions 19 with the projections 17 of all thev locking membersl 16 are Within the periphery of the wheel .or fixed rim 10. When said locking members 16V are in such retracted positions, the rim 12 with its tire can be slid sidewise from theffixed rim 10 of the wheel, and another demountable :rim with. its tire can be easily and quicklyvslipped on said fixed rim,

and all the locking members 16, by ther reverse operation just described, may be made to have their ridges or'projections 17 pass into the circumferential bead 18 of the rim 12, as shown in Figure 1, and securely clamp the rdemountable rim against creeping around the periphery of the fixed rim 10 or.y wheel [and at the same time firmly lockv said rim with its tire from movement in a direction transverse to the plane of the wheel.

so`Y

Inv the form vshown in Figs. 5 to `8, thef` from or sacrificing any of theadvantages of the invention.Y l

What I claim is 1.y In a device of the character described including a wheel having a fixed rima demountable rim having a circumferentialV bead-forming an inner circular depression therefor, locking wedges having longitudinal ridges and mounted substantially tangentially to the circumference of the fixed rim and movable in a direction in the` planerof the wheel and so constructed, arranged and adapted to engagefsaid demountable rim to hold the same from creeping around'the 'fixed rim in the plane of the wheel and also against lateral movement in a direction transverse tothe plane of the wheel,k by the seating of said ridges in the circular depression of the demountable rim.,

2. A` device of the character described including a wheel body with'recesses therein, a demountable rim therefor having an outwardly projecting bead extending circumferentially around the middle section of the rim, pairs of locking Wedges having projections adapted to engage said rirn and bead and mounted in said recesses in the Wheel body, a projection on the Wheel body in each of said recesses forming an abutment for said Wedges in their retracted positions, eXtensions from said Wedges passing into the wheel body and between the spokes,` 'and a bolt having oppositely threaded ends engaging said extenslons for operating the locking 10 Wedges. l

In testimony- Whereof I aiX my signature.

GEORGE RISCHMULLER. 

